In this paper,studies were carried out to determine the odor feature of six different milk flavorings(four natural milk flavorings and two synthetic flavorings) and a sample of lipolyzed butter.The principal component analysis(PCA) of Electronic nose sensor data indicated that the electronic nose sensors can clearly and rapidly distinguish the difference between the synthetic flavorings and the natural flavorings.The result showed that the electronic nose could be well applied to the development and research of flavorings.